Snap-hook



(No Model.)

L. C. CHASE.

SNAP 1100K. No. 288,7?4. Patented Nov. 20, 1888.

/M WITNESSES: INVBNTGR.

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UNITED STATES ATENT vries.

Lucius o. cansa-or Bosron, nnsskcnusnrrs.y

SNAP-HOOK.

SPECIFICATION forming part of Letters PatentNo. 288,774, dated November2G, 1883, Application filed May 21, 1883. (No model.)

To @ZZ whom zit may concern:

Be it known that I, LUoIUs C. CHAsn, of Boston, in the county of Suffolkand State of Massachusetts, have invented certain new and usefulImprovements in Snap-Hooks; and I do hereby declare that the followingis a full, clear, and exact description of the invention, which willenable others skilled in the art tov which it appertains te make and usethe same, reference being had to the accompanying drawings, which form apart of this specification, and in which- Figure l is a perspective viewof my improved snap-hook, showing it attached to the end of a cord. Fig.2 is a similar view of the same adapted to be attached to a strap. Fig.3 is a longitudinal vertical section of Fig. l. Fig. 4 is a perspectiveview of the body ofthe hook as it appears when removed from the mold,and Figs. 5. and 6 are detail views.

Similar letters of reference indicate eorrespending parts in all thefigures.

My invention has relation to snap-hooks for bridles, harness, or similararticles; and it consists .in the improved construction and combinationof parts of the same, as hereinaiter more fully described and claimed.

In the accompanying drawings, the letter A indicates the body of thesnap, which consists of an inwardly-bent hook, B, the end ofwhich isrounded, and a hollow sleeve, C, cast in one piece with the hook, thelatter extending from the end of the sleeve. This sleeve is cast open atthe side opposite to the side from the end of which the hook extends ina trough shape, U -shaped in section, and the hook is cast with itsinwardly-bent end straight, and after the casting is done and the springand the bolt, which will be described, are inserted the body is placedin a die, which will close the sides of the sleeve and bend the end ofthe hook, thus doing away with the necessity of casting with a core. Ahollow thimble, D, slides inside the sleeve, and the closed end of. thesame, which extends out of the end of the sleeve at which the hook is,is slightly concave for the reception of the inwardly-bent end of thehook. Inside this thimble is placed a spiral spring, E, which is ofabout the double length of the thimble, and which bears with one endagainst the inside of the end of the thirnble,y and with the other endagainst the end ofthe cord F,when the latter has been inserted, forcingthe thimble out to bear against the end of the hook.

When the snap is used attached to a strap, the end ofthe body forms aneye, G, as shown in Fig. 2, the shank H of which forms a eylindricalshoulder, I, of the same diameter as the sleeve when closed, againstwhich shoulder the end of the spiral spring bears while the strap isbuckled or otherwise fastened to the eye.

If desired, the thilnble may be provided with a projecting pin orbutton, J, as shown in Fig. 6, which will project and slide in a slot,K, formed by not closing the edges of the aps or sides of the sleeveentirely at the outer end of the same, the said pin serving to operatethe sliding thimble, drawing it back when it is desired to unhook thesnap. It will, however, be seen that it is not necessary to have thepin, as the thimble may be pushed back by simply pressing the side ofthe ring in which the hook is either hooked or in which it is desired tohook the snap against the rounded end of the hook and the end of thethimble, when the rounded end ofthe hook will allow the ring to enterbetween itself and the end of the thimble, pushing the latter back.

It will be seen that no means of fastening are necessary to secure thecord in the end of the sleeve, as the cord is inserted into the end ofthe sleeve when the thimble and the spiral spring are inserted, and theiiaps or sides of the sleeve being closed will press upon the cord andhold it firmly in place. It follows that the sleeve must be cast of somemalleable metal when a snap is provided, which maybe manufactured at asmall cost, no work being necessary, except the casting of the sleeveand the closing of the same, as the manner of casting the sleeve andhook with the sides open do away with the necessity of casting over acore, which again obviates the necessity of milling the inside of thesleeve out after easting, and the snap produced is effective ofoperation and simple to apply upon the object upon which it is to befastened.

Having thus described my invention, I claim IOO and desire to secure byLetters Patent of the United States- 1. The combination ofthe body ofthe snap forming the bent hook at one end, and con- `5 sisting of thehollow sleeve, the sliding thimble concave at its outer closed end, andthe spiral spring tting vwith one end into the thimble, as and for thepurpose shown and set forth.

Io 2. rIhe combination of the body of the snap,

consisting of the hook having the inwardlybent rounded end and thesleeve, the sliding thimble having concave outer closed end,

the spiral spring fitting into the thirnble with a part -of its length,and the cord, to which the 15 snap is attached, held in place rrnly bythe bent sides of the sleeve and forming an abutment for the other endof the spring, as and for thepurpose shown and set forth.

In testimony that I claim the foregoing as my 2o own I have hereuntoaffixed my signature in presence of two' Witnesses.

LUGIUS G. CHASE.

'Witnesses:

WVM. SECHER, Louis BAGGER.

